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timerfd.2: Add documentation for CLOCK_UPTIME and CLOCK_BOOTTIME

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Add CLOCK_UPTIME and CLOCK_BOOTTIME options and a quick pointer
to clock_gettime(2) for a better definition of these values.

Reviewed-by: imp (small tweaks and added Xr)
Pull-Request: https://github.com/freebsd/freebsd-src/pull/1302
This commit is contained in:
Cormac Stephenson 2024-06-28 10:45:44 -06:00 committed by Warner Losh
parent 239e24eb0c
commit 172328c477
1 changed files with 8 additions and 1 deletions
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9
lib/libsys/timerfd.2
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@ -23,7 +23,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd May 21, 2023
.Dd June 28, 2024
.Dt TIMERFD 2
.Os
.Sh NAME
@ -95,9 +95,16 @@ argument specifies the clock used as a timing base and may be:
.Bl -tag -width "Dv CLOCK_MONOTONIC" -compact
.It Dv CLOCK_REALTIME
Increments as a wall clock should.
.It Dv CLOCK_BOOTTIME
.It Dv CLOCK_MONOTONIC
Increments monotonically in SI seconds.
.It Dv CLOCK_UPTIME
Increments monotonically in SI seconds, but is paused while the system is
suspended.
.El
See
.Xr clock_gettime 2
for more precise definitions.
.Pp
The
.Fa flags